Tetrahydrophthalic Anhydride from Canada
Tetrahydrophthalic anhydride is a hydrogenated derivative of phthalic anhydride, synthesized from aromatic precursors like o-xylene. Classified under HTS 2917.19.40.00 due to its partial aromatic hydrocarbon derivation and acyclic polycarboxylic acid anhydride structure. Used in epoxy resins and alkyd coatings.
Duty Rate — Canada → United States
16.5%
Rate breakdown
9903.05.2910%Section 301 (forced labor) — additional 10% ad valorem on products of Canada
Import Tips
• Include synthesis pathway documentation showing aromatic hydrocarbon origin to justify this specific subheading
• Check for stabilizer additions; if exceeding Chapter 29 note (f) limits, may shift to mixtures classification